In an AP if d = -4,n=7, nth Term=4,find a
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formula of Tñ is,
Tñ= a( n-1 )d
here d = -4,n=7, nth Term=4,
4 = a+ ( 7-1) -4
4 = a+ (-24)
4 = a - 24
4+24 = a
28 = a
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